Using older client 10201 with 11g database

Hello,
Are there any issues with using sqlplus client 10201 with 11g database with regard to performance? I would think using the 11g client with 11g database would be preferred but what would be the disadvantage in using sqlplus 10201 with 11g database?
Also, what would be disadvantage if using sqlplus 11g with an older database 10201/10202? Thank you.

I guess the most visible and the prominent issue of using an old version client with the more latest version db would be that the older version client won't be able to display/use some of the newest features. This sounds more like a usability issue than performance issue which you mentioned but that's what which came on top of the mind. Performance should not be affected as the client doesn' do much except to pull the data so if there would be any issues actualy , they would be with the server rather than the client.
Just my 2 cents.
HTH
Aman....

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